Founding Engineer

Posted Yesterday
San Francisco, CA, USA
In-Office
150K-250K Annually
Entry level
Artificial Intelligence • Software • Automation
The Role
First engineering hire responsible for defining the technical foundation, selecting the technology stack, and building Orpex’s AI workforce infrastructure. The role involves shipping production agent systems, owning full-stack development and deployment, engaging users, iterating on products, managing infrastructure and UI, and helping hire future engineers.
Summary Generated by Built In

About Orpex

The next generation of service companies won't scale through headcount. They'll be built by tiny teams orchestrating AI workforces with 1000x the output. Orpex is building the infrastructure they run on: agentic workforce, company brain, human trust layer, one cockpit to run the business.
We just raised an oversubscribed 2,7mio angel round in 7 days and are moving at rapid speed.

Founding Engineer

You'd be the first hire. This is a once-in-a-generation shot to define how service companies get built. You'll own the technical foundation, pick the stack and set the standard for everyone who comes after you.

Who we're looking for
  • Applied LLMs. You've shipped production agent systems: orchestration, tool calling, long-running tasks, evals. Opinions earned through pain, not blog posts.

  • Proven builder. Track record of fast, production-grade shipping across the full stack (TypeScript/Python, modern infra).

  • Product engineer, not software developer. Nobody tells you what to build. You talk to users, define the outcome, ship it.

  • Ownership and intensity. You force things into existence. Bonus if you've founded something or joined a startup early.

  • AI-native. You write code with AI at a pace that would have looked unreasonable two years ago.

Your first month
  • Ship from day one. Production code in week one.

  • Own it end-to-end. Spec, build, deploy, talk to the user, iterate.

  • Do what needs doing. Infra, UI, customer calls, hiring the next engineer.

We offer
  • $150–250K USD base + meaningful founding equity

  • San Francisco in person - Visa sponsorship possible

  • Zero friction. Hardware, tools and unlimited model budget. Nobody asks.

  • Pace and purpose. Small team, high standards, high trust, no politics, in person.

Process
  1. 30-min intro call

  2. 90-min technical deep dive on something you built

  3. Technical Task

  4. Offer the same week

If you want to build something truly generational and are ready to make it your life's mission, this is for you!

Skills Required

  • Experience shipping production agent systems, including orchestration, tool calling, long-running tasks, and evaluations
  • Track record of rapidly shipping production-grade software across the full stack
  • Experience with TypeScript and Python
  • Experience working with modern infrastructure
  • Ability to define products, talk to users, and independently ship solutions
  • Ability to work with AI-native coding workflows
  • Founded a company or joined a startup early
Am I A Good Fit?
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The Company
1 Employee

What We Do

Orpex provides an AI operating system for AI-native service businesses. Users describe the company they want to build, and Orpex assembles an AI-agent workforce, operating playbooks, and a shared company “brain” to run it. Its agents can support recruiting, website development, marketing, PR, lead generation, and back-office work, while founders retain oversight and approve key actions. The platform aims to help small teams operate companies with less reliance on headcount.

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